bash - What does wait $! mean - Stack Overflow To add to this answer: Executing the command (su ) in the background and immediately wait ing for it can be useful when using set -e and writing conditions whose code should still have set -e in place (code that occurs in conditions is usually exempt from set -e)
Difference between wait () vs sleep () in Java - Stack Overflow What is the difference between a wait() and sleep() in Threads? Is my understanding that a wait() -ing Thread is still in running mode and uses CPU cycles but a sleep() -ing does not consume any CPU cycles correct? Why do we have both wait() and sleep()? How does their implementation vary at a lower level?
Python time. sleep () vs event. wait () - Stack Overflow Using exit_flag wait(timeout=DELAY) will be more responsive, because you'll break out of the while loop instantly when exit_flag is set With time sleep, even after the event is set, you're going to wait around in the time sleep call until you've slept for DELAY seconds In terms of implementation, Python 2 x and Python 3 x have very different behavior In Python 2 x Event wait is implemented
Why must wait() always be in synchronized block - Stack Overflow We all know that in order to invoke Object wait(), this call must be placed in synchronized block, otherwise an IllegalMonitorStateException is thrown But what's the reason for making this restric